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Comparison of three methods for determination of the degree of conversion in commercial light-cured composites: DSC and FTIR based on weight percent of methacrylate groups versus FTIR with an internal standard
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¿º¿ë¸® ( Yan Yong-Li ) - °æºÏ´ëÇб³ ´ëÇпø ÀÇ¿ë»ýü°øÇаú
±ÇÅ¿± ( Kwon Tae-Yub ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú»ýüÀç·áÇб³½Ç
±è±³ÇÑ ( Kim Kho-Han ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú»ýüÀç·áÇб³½Ç
±è¿µ°æ ( Kim Young-Kyung ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
KMID : 0362220130400040281
Abstract
º» ½ÇÇèÀÇ ¸ñÀûÀº DSC¿Í FTIRÀ» ÅëÇØ °áÁ¤ÇÑ º¹ÇÕ ·¹ÁøÀÇ ÀüȯÀ²À» ºñ±³ÇÏ´Â °ÍÀÌ´Ù. ´Ù¼¸ °¡Áö ½ÃÆÇ ÁßÀÎ º¹ÇÕ ·¹ÁøÀ» »ç¿ëÇÏ¿´´Ù. FTIRÀ» ÀÌ¿ëÇÏ¿© ¿©·¯ ³óµµ·Î Èñ¼®½ÃŲ methyl methacrylate (MMA)ÀÇ °ËÁ¤°î¼±À» ±¸ÇÏ¿´´Ù. Weight percent of methacrylate groups (WPMG) ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ·¹ÁøÀÇ ÁßÇÕ ÀüÈÄÀÇ WPMG º¯È¸¦ °è»êÇÏ¿´´Ù. ¶ÇÇÑ DSC ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ÀÌ·ÐÀûÀÎ ¹ß¿°ª (exotherm)°ú ½ÇÇèÀûÀÎ ¹ß¿°ªÀ» °áÁ¤ÇÏ¿´´Ù. ´Ù¼¸ °¡Áö º¹ÇÕ ·¹Áø¿¡ ´ëÇÏ¿© internal standard, WPMG, DSC ¹æ¹ýÀ» ÅëÇØ ÀüȯÀ²À» °è»êÇÏ¿´´Ù. Internal standard¿Í WPMG ¹æ¹ýÀ» »ç¿ëÇÑ °æ¿ì °¢ º¹ÇÕ ·¹Áø¿¡¼ À¯ÀÇÇÑ Â÷ÀÌ°¡ °üÂûµÇÁö ¾Ê¾ÒÀ¸³ª (p>0.05), DSC ¹æ¹ýÀ» »ç¿ëÇÑ °æ¿ì À¯ÀÇÇÏ°Ô ³·Àº ÀüȯÀ² °ªÀÌ ¾ò¾îÁ³´Ù (p<0.05). FTIR·Î º¹ÇÕ ·¹ÁøÀÇ ÀüȯÀ²À» ÃøÁ¤ ½Ã internal standard°¡ Àû´çÇÏÁö ¾ÊÀº °æ¿ì WPMG ¹æ¹ýÀ» Àû¿ëÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÈ´Ù.
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Resin composite; Degree of conversion; DSC; FTIR spectroscopy
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